table_distribution() 描述:查看当前库中所有表在各节点的存储空间分布情况。 返回值类型:record 使用本函数涉及全库表信息查询,需要具备管理员权限或预置角色gs_role_read_all_stats权限。 当前基于table_distribution()函数, GaussDB (DWS)提供视图PGXC_GET_TABLE_SKEWNESS进行数据倾斜查询,建议在数据库中表数量(小于...
sched_cust_table_distributionparameter=value 參數 參數值類型說明 cronString字串必要。 此排程會將表格配送為 cron 字串。 例如,若要在每天凌晨 2 點執行工作,請執行下列指令: 0 2 * * * . customTableName字串必要。 要配送的自訂表格名稱。 startTime日期開始執行配送工作的時間,格式為yyyy-mm-dd hh:mm...
This distribution can deliver the highest query performance for joins and aggregations on large tables. To shard data, a hash function is used to deterministically assign each row to a distribution. In the table definition, one of the columns is designated as t...
sched_cust_table_distribution parameter=value 参数 参数值类型描述 cronString 字符串 必需。 分发该表的调度,以 cron 字符串形式指定。 例如,要在每天上午 2 点运行作业,请执行以下操作: 0 2 * * *. customTableName 字符串 必需。 要分发的定制表的名称。 startTime 日期 开始运行该分发作业的时间,以 yy...
Thetable_distribution_statustable contains the following columns: node_id Node id table_id Table ID tab_copy_status Status of copying of table distribution data to disk; one ofIDLE,SR_PHASE1_READ_PAGES,SR_PHASE2_READ_TABLE,SR_PHASE3_COPY_TABLE,REMOVE_NODE,LCP_READ_TABLE,COPY_TAB_REQ,COPY...
Thetable_distribution_statustable provides information about the progress of table distribution forNDBtables. Thetable_distribution_statustable contains the following columns: node_id Node id table_id Table ID tab_copy_status Status of copying of table distribution data to disk; one ofIDLE,SR_PHASE...
distribution_policy_descnvarchar(60)UNDEFINED、NONE、HASH、REPLICATE、ROUND_ROBINAzure Synapse Analytics は、HASH、ROUND_ROBIN、または REPLICATE のいずれかを返します。 Azure Synapse Analytics と Parallel Data Warehouse のカタログ ビュー フィードバック ...
A table distribution is the hierarchy that is used to distribute data from the Microsoft Dynamics AX database to store locations. For each table that is included in the table distribution, you specify the type of distribution that occurs. You also define the parent/child relationships for the ...
PROBLEM TO BE SOLVED: To provide a table distribution support system, table distribution device and table distribution processing method of the table distribution device for companions, capable of efficiently distributing the companions to a table of a customer.YAMAGUCHI HIROYUKI...
AnalyticDB for PostgreSQL supports three table distribution schemes: hash distribution, random distribution, and replicated distribution. Syntax CREATE TABLE table_name (...) [ DISTRIBUTED BY (column [,..] ) | DISTRIBUTED RANDOMLY | DISTRIBUTED REPLICATED ] Hash distribution DISTRIBUTED BY (...